How to set UE4 Priority to low?

Hi, So I recently heard that setting the priority of UE4 lower than the priority of the light building and shader compiling will speed up light building times by a lot, problem is I don’t know how to do that. Hope I get a response soon!

If you mean setting the priority of the program in Windows to low:
You just open the task manager, select the Unreal Editor, right click, go to process, right click and set the priority to low.

In Swarm Agent, set the “ShowDeveloperMenu” to true then in the developer settings, set the process priority to below normal or idle.